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Teacher Demo: Greenhouse Effect
Introduction This demo demonstrates the greenhouse effect by comparing the air temperature of a room with the air temperature inside a clear plastic bag containing black construction paper. The bag models the Earth’s atmosphere and the black construction paper models...
Candy Chromatography – The Lab by Steve Spangler
Have you ever wondered how candies get their different colors or how many dyes make a black jellybean? Candies come in all shapes and sizes. You might find spheres in all the colors of the rainbow or find tiny discs that are colored brown or white. But, do you know...
Characteristics of Soil Activity
In this activity, students will observe a variety of soil types and describe the characteristics of these soils. Soil is made up of air, water, recycling organisms, rock particles, and humus. Different types of soils are defined by the different proportions...
Corals can still grow their ‘bones’ in acid waters
https://youtu.be/Z4OCZWWoWls New finding reveals how corals build their skeletons. Learn more: http://scim.ag/2rZhNh1 Read the research ($): http://scim.ag/2qGeCqt
Chromatography Challenge – Flinn Scientific Canada
Reproduce beautiful, multicolour art patterns using paper chromatography! Various colour pigments that make up black inks can be separated using radial chromatography. The inks are spotted onto a filter-paper circle containing a paper “wick” in the center, and the...
The physics of the “hardest move” in ballet – Arleen Sugano
https://youtu.be/l5VgOdgptRg In the third act of "Swan Lake", the Black Swan pulls off a seemingly endless series of turns, bobbing up and down on one pointed foot and spinning around and around and around ... thirty-two times. How is this move — which is called a...
Float When It’s Denser
This activity helps to illustrate the particle theory and how it applies to solutions. Some earlier work using the particle theory is a prerequisite. Dissolving salt into water increases the water’s density, allowing more dense materials to float in the salt water...
Scientists discover a sixth sense on the tongue—for water | Science | AAAS
New study in mice sheds light on how animals stay hydrated Viewed under a microscope, your tongue is an alien landscape, studded by fringed and bumpy buds that sense five basic tastes: salty, sour, sweet, bitter, and umami. But mammalian taste buds may have an...
Teacher Demos: A. Digestive enzymes, B. Control of Breathing, C. Baroreceptor Reflex
Introduction These three demos allow students to experience applications of knowledge of the digestive, respiratory, and circulatory systems by doing very short activities on themselves. They also allow the opportunity to discuss the pros and cons of using humans...
What is entropy?
https://youtu.be/YM-uykVfq_E There’s a concept that’s crucial to chemistry and physics. It helps explain why physical processes go one way and not the other: why ice melts, why cream spreads in coffee, why air leaks out of a punctured tire. It’s entropy, and...
Why whales grew to such monster sizes
https://youtu.be/lvdtRh9bfrE Scientists tackle the long-standing mystery of the evolutionary forces behind the ocean's behemoths. Learn more: http://www.sciencemag.org/news/2017/0... Greenland footage credit: NASA's Goddard Space Flight Center
How Do Curveballs Change Direction in Midair?
https://youtu.be/cuQI7lW1wxU It’s amazing how professional baseball players can throw very fast curveballs, but do you know how do curveballs change direction in midair? Hosted by: Stefan Chin ---------- Support SciShow by becoming a patron on Patreon:...